Alright, let's work through 2091 times 6891 step by step
2091 × 6891 = 6891 × (2091)
+ 6891 × 1 that results in 6891
+ 6891 × 90 that results in 620190
+ 6891 × 000 which equals 0
+ 6891 × 2000 giving us 13782000

= 14409081
